package com.fengye.knife4j.utils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

/**
 * cookie工具类
 */
public class CookieUtils {

    public static Cookie getCookie(HttpServletRequest request, String cookieName){
        Cookie[] cookies = request.getCookies();
        Cookie cookie = null;
        try{
            if (cookies != null && cookies.length > 0){
                for (int i = 0; i < cookies.length; i++) {
                    if (cookies[i].getName().equals(cookieName)){
                        return cookies[i];
                    }
                }
            }
        }catch (Exception e){
            e.printStackTrace();
        }
        return cookie;
    }

    public static String getCookieValue(HttpServletRequest request, String cookieName){
        Cookie cookie = getCookie(request,cookieName);
        if (cookie != null){
            return cookie.getValue();
        }else {
            return null;
        }
    }

    public static Cookie getCookie(Cookie[] cookies, String cookieName) {
        if (null == cookies) {
            return null;
        } else {
            for (Cookie cookie : cookies) {
                if (cookie.getName().equals(cookieName)) {
                    return cookie;
                }
            }
            return null;
        }
    }
}